Plumb-stock.



J. J. W'ARTMAN.

PLUMB STOCK.

APPLICATION FILED 111 3.12, 1913.

Patented Sept. 15,1911

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such oblique edge.

STATS FATEN JOHN J. wnnrruau, or New YORK, N. Y.

GFFICE.

of which the following is a specification.

The general object of the invention is to improve the construction of i the type of plumbs or levels which are generally used by masons for use on work which is inclined at any required number of degrees from the perpendicular, in point of facilitating the adjustment of the spirit level to the angle of inclination of the work. And to this end the invention resides inadjustably mounting the bubble-case on a support and providing a scale and pointer for readily determining the angle to which the bubble-case must be adjusted in order to correspond to the angle of the work.

Other objects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the accompanying drawings forming part hereof, in which Figure l is a side elevation of the invention. Fig. 2 is a detail side elevation of the bubble case and its support. Fig. 3 is a vertical cross section on the line 33 of Fig. 2. Fig. 1 is a view similar to Fig. 2 of a modified form.

In the drawings a indicates generally the ordinary plumb stock used by masons in use with work whose surface is either vertical or horizontal. With work whose surface is inclined from the perpendicular it has heretofore been customary to employ a plumb stock having one of its longitudinal edges disposed obliquely to the other and with the axis of the bubble-case at right angles to This construction of the plumb stock adapts it for only certain angles. With the present construction, however, the plumb stock a has its opposite longitudinal edges parallel and is provided at some point along its middle line, preferably in an opening .5 adjacent to one of its ends, with a support made up of spaced ears 6-6 which receive between them a lug 7 formed by extending the middle portions of the meeting edges of the metallic casing 8 which surrounds the bubble-tube 9. The ears 66 are adapted to be rigidly secured to the bot- Specification of Letters Patent.

Application filed April 12, 1913.

Patented Sept. 15, 191 1.

Serial No. 760,710.

tom wall of the opening 5, such as by passing screws or other fastening devices through their laterally turned end portions 1010 and into the body of the plumb stock a. The ears and lugs are pierced centrally to receive a suitable clamping device herein shown as a headed screw 11 which cooperates with a winged nut 12 to efiect the binding of the ears on the lug, whereby, to fasten the lug and the parts carried thereby against accidental movement. The screw being of such diameter as to admit of the turning of the lug thereon when the pressure on the ears and lug efl'ected by the screw and nut, is removed.

A. scale 13 is inscribed on one of the ears 6 and a pointer 14 is suitably secured to the casing 8 of the bubble tube, so that the presence of the pointer on any graduation in the scale will indicate the angle of the bubbletube to one of the longitudinal edges of the plumb stock a.

In Fig. 41 a modified form of scale arrangement is shown, and here it will be seen that the scale 15 is arranged on the plumb stock a, while the pointer 16 extends beyond one end of the bubble tube so as to cooperate with the scale for the purpose mentioned in connection with Figs. 1 and 2.

In Fig. 1 it will be observed that a second bubble-tube b and its support a each constructed identically to the first described bubble-tube and support, are arranged in an opening 17 located beyond the opening 5, but here the support 0 is disposed at right angles to the first named support, whereby to admit of employing the ends of the plumb stock for the purposes hereinbefore pointed out for the sides.

What is claimed as new is:

In a plumb stock, spaced ears mounted thereon, a casing consisting of side portions having lugs located between the ears, said lugs having their inner surfaces in close contact with each other, a clamping device passing transversely through the ears and lugs and a bubble tube retained between the side portions of the casings.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN J. WARTMAN.

Witnesses JOHN A. DoNneHY, Grno. F. Brawn.

Copies 0! this patentmay be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

